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Finding the Fourth Proportional to 428,878.17, 591,852.46 and 237,891.56

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Solution

The fourth proportional to 428,878.17, 591,852.46 and 237,891.56 is: 328,290.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,878.17 : 591,852.46 = 237,891.56 : x
  2. Step 2: Convert to fraction form
    428,878.17/591,852.46 = 237,891.56/x
  3. Step 3: Cross multiply
    428,878.17x = 591,852.46 × 237,891.56
  4. Step 4: Simplify right side
    428,878.17x = 140,796,704,999.24
  5. Step 5: Solve for x
    x = 140,796,704,999.24/428,878.17
  6. Step 6: Final answer
    x = 328,290.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.